模拟燃烧环境介质和温度对不锈钢表面氧化物形态的影响研究

doi:10.11902/1005.4537.2019.024

中国腐蚀与防护学报

2020, Vol. 40

Issue (4): 358-366 DOI: 10.11902/1005.4537.2019.024

研究报告

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模拟燃烧环境介质和温度对不锈钢表面氧化物形态的影响研究

谢冬柏¹(

), 洪昊², 王文³, 彭晓¹, 多树旺²

1.南昌航空大学材料科学与工程学院南昌 330063
2.江西科技师范大学江西省材料表面工程重点实验室南昌 330013
3.中国科学院金属研究所金属腐蚀与防护实验室沈阳 110016

Oxidation Behavior of Stainless Steel 1Cr11Ni2W2MoV in a Simulated Kerosene Combustion Environment

XIE Dongbai¹(

), HONG Hao², WANG Wen³, PENG Xiao¹, DUO Shuwang²

1. School of Material Science and Engineering, Nanchang Hangkong University, Nanchang 330063, China
2. Jiangxi Key Laboratory of Surface Engineering, Jiangxi Science and Technology Normal University, Nanchang 330013, China
3. Laboratory of Corrosion and Protection, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China

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摘要:

研究了耐热不锈钢1Cr11Ni2W2MoV在600，700和800 ℃空气和模拟煤油燃烧环境中的氧化行为，对表面生成的氧化物进行了表征，并讨论了环境介质对耐热不锈钢高温氧化行为的影响机制。结果表明:1Cr11Ni2W2MoV耐热钢在热空气中表面生成的氧化膜完整致密，表现出优良的抗氧化性能；而在模拟煤油燃烧环境中表面形成了疏松的氧化膜，并出现了瘤状氧化物，加速了不锈钢中Cr的消耗，明显降低了表面氧化膜的保护性。

关键词 ：燃烧环境, 火灾调查, 1Cr11Ni2W2MoV, 氧化物, 高温腐蚀

Abstract：

Metallic materials exposed to fire scenes are usually subjected to high temperature oxidation, of which the atmosphere composition and temperature have been considered as vital parameters. In this study, the high temperature oxidation behavior of 1Cr11Ni2W2MoV stainless steel in air and simulated kerosene-combustion atmosphere at 600, 700 and 800 ℃ were studied by means of visual analysis and micro-structural observation of the formed oxide scale. The results show that the 1Cr11Ni2W2MoV possessed good oxidation resistance and the scales primarily remained continuous and well adherent to the substrate in air. Whilst, the presence of kerosene combustion products apparently increased the consumption of Cr element, reduced the adhesion of oxide scale and hence decreased the oxidation resistance of the steel. Additionally, the combustion products of kerosene resulted in the formation of nodular oxides in the formed scale. Therefore, the combustion of kerosene in fire scene could increase the oxidation rate of 1Cr11Ni2W2MoV, which are expected to offer complementary insight into reconstruction of fire scene.

Key words： combustion environment fire investigation 1Cr11Ni2W2MoV oxide high temperature oxidation

收稿日期: 2019-02-14

ZTFLH:

TG172

基金资助:南昌航空大学博士启动基金，痕迹检验鉴定技术公安部重点实验室开放课题 (2019) 及江西省材料表面工程重点实验室开放课题(KFGJ19009)

通讯作者: 谢冬柏 E-mail: dbxie@aliyun.com

Corresponding author: XIE Dongbai E-mail: dbxie@aliyun.com

作者简介: 谢冬柏，男，1973年生，博士

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引用本文:

谢冬柏, 洪昊, 王文, 彭晓, 多树旺. 模拟燃烧环境介质和温度对不锈钢表面氧化物形态的影响研究[J]. 中国腐蚀与防护学报, 2020, 40(4): 358-366.
Dongbai XIE, Hao HONG, Wen WANG, Xiao PENG, Shuwang DUO. Oxidation Behavior of Stainless Steel 1Cr11Ni2W2MoV in a Simulated Kerosene Combustion Environment. Journal of Chinese Society for Corrosion and protection, 2020, 40(4): 358-366.

链接本文:

https://www.jcscp.org/CN/10.11902/1005.4537.2019.024 或 https://www.jcscp.org/CN/Y2020/V40/I4/358

图1 高温氧化实验装置 (箭头所示方向为燃烧气体的流动方向)

图2 反应炉中温度曲线

图3 试样在600 ℃热空气和煤油燃烧气氛中氧化不同时间后的表面宏观形貌

图4 试样在800 ℃热空气和煤油燃烧气氛中氧化不同时间后的表面宏观形貌

图5 1Cr11Ni2W2MoV不锈钢试样在600 ℃不同气氛中氧化30 min后表面的AFM像

图6 1Cr11Ni2W2MoV不锈钢试样在800 ℃下不同气氛中氧化30 min后表面的AFM像

图7 1Cr11Ni2W2MoV不锈钢试样在不同温度下煤油燃烧气氛中氧化1 h后表面的AFM像

图8 1Cr11Ni2W2MoV不锈钢试样在600 ℃下不同气氛中氧化1 h后表面的SEM像

图9 1Cr11Ni2W2MoV不锈钢试样在800 ℃下不同气氛中氧化1 h后表面的SEM像

图10 1Cr11Ni2W2MoV不锈钢试样在600 ℃下不同气氛中氧化1 h后截面的SEM像

图11 1Cr11Ni2W2MoV不锈钢试样在700 ℃下不同气氛中氧化1 h后截面的SEM像

图12 1Cr11Ni2W2MoV不锈钢试样在800 ℃下不同气氛中氧化30 min后截面的SEM像

图13 1Cr11Ni2W2MoV不锈钢试样在不同气氛中氧化后的XRD谱

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